51% (2000)

64% (1999)

65% (2001)

41% (2001)

53% (2000)

55% (1997)

47% (1996)

45% (2002)

30% (1998)

70% (1995)

57% (1999)

70% (2001)

48% (2001)

33% (1998)

67% (2000)

64% (2000)

30% (2000)

45% (1996)

54% (1997)

60% (1998)